1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __NET_GEN_STATS_H
3 #define __NET_GEN_STATS_H
4 
5 #include <linux/gen_stats.h>
6 #include <linux/socket.h>
7 #include <linux/rtnetlink.h>
8 #include <linux/pkt_sched.h>
9 
10 /* Note: this used to be in include/uapi/linux/gen_stats.h */
11 struct gnet_stats_basic_packed {
12 	__u64	bytes;
13 	__u64	packets;
14 };
15 
16 struct gnet_stats_basic_cpu {
17 	struct gnet_stats_basic_packed bstats;
18 	struct u64_stats_sync syncp;
19 } __aligned(2 * sizeof(u64));
20 
21 struct net_rate_estimator;
22 
23 struct gnet_dump {
24 	spinlock_t *      lock;
25 	struct sk_buff *  skb;
26 	struct nlattr *   tail;
27 
28 	/* Backward compatibility */
29 	int               compat_tc_stats;
30 	int               compat_xstats;
31 	int               padattr;
32 	void *            xstats;
33 	int               xstats_len;
34 	struct tc_stats   tc_stats;
35 };
36 
37 int gnet_stats_start_copy(struct sk_buff *skb, int type, spinlock_t *lock,
38 			  struct gnet_dump *d, int padattr);
39 
40 int gnet_stats_start_copy_compat(struct sk_buff *skb, int type,
41 				 int tc_stats_type, int xstats_type,
42 				 spinlock_t *lock, struct gnet_dump *d,
43 				 int padattr);
44 
45 int gnet_stats_copy_basic(const seqcount_t *running,
46 			  struct gnet_dump *d,
47 			  struct gnet_stats_basic_cpu __percpu *cpu,
48 			  struct gnet_stats_basic_packed *b);
49 void __gnet_stats_copy_basic(const seqcount_t *running,
50 			     struct gnet_stats_basic_packed *bstats,
51 			     struct gnet_stats_basic_cpu __percpu *cpu,
52 			     struct gnet_stats_basic_packed *b);
53 int gnet_stats_copy_basic_hw(const seqcount_t *running,
54 			     struct gnet_dump *d,
55 			     struct gnet_stats_basic_cpu __percpu *cpu,
56 			     struct gnet_stats_basic_packed *b);
57 int gnet_stats_copy_rate_est(struct gnet_dump *d,
58 			     struct net_rate_estimator __rcu **ptr);
59 int gnet_stats_copy_queue(struct gnet_dump *d,
60 			  struct gnet_stats_queue __percpu *cpu_q,
61 			  struct gnet_stats_queue *q, __u32 qlen);
62 void __gnet_stats_copy_queue(struct gnet_stats_queue *qstats,
63 			     const struct gnet_stats_queue __percpu *cpu_q,
64 			     const struct gnet_stats_queue *q, __u32 qlen);
65 int gnet_stats_copy_app(struct gnet_dump *d, void *st, int len);
66 
67 int gnet_stats_finish_copy(struct gnet_dump *d);
68 
69 int gen_new_estimator(struct gnet_stats_basic_packed *bstats,
70 		      struct gnet_stats_basic_cpu __percpu *cpu_bstats,
71 		      struct net_rate_estimator __rcu **rate_est,
72 		      spinlock_t *lock,
73 		      seqcount_t *running, struct nlattr *opt);
74 void gen_kill_estimator(struct net_rate_estimator __rcu **ptr);
75 int gen_replace_estimator(struct gnet_stats_basic_packed *bstats,
76 			  struct gnet_stats_basic_cpu __percpu *cpu_bstats,
77 			  struct net_rate_estimator __rcu **ptr,
78 			  spinlock_t *lock,
79 			  seqcount_t *running, struct nlattr *opt);
80 bool gen_estimator_active(struct net_rate_estimator __rcu **ptr);
81 bool gen_estimator_read(struct net_rate_estimator __rcu **ptr,
82 			struct gnet_stats_rate_est64 *sample);
83 #endif
84